Control mechanism for two cut-off devices mounted in series
US4278108A · kind A · utility
10Cited by
5References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 10, 1980 |
| Grant date | Jul 14, 1981 |
| Priority date | — |
| Expiry date | Mar 10, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87917
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A mechanism for controlling two rotatable cut-off devices which are mounted in series in a shell for connection to one and the same pipe, comprises a jack in respect of each cut-off device, each jack being articulated to a lever fast with a journal of a respective one of the cut-off devices and to the shell in the zone thereof supporting the journals of the other cut-off device. The invention is particularly applicable to the valves for protecting a hydraulic machine in a high-fall hydraulic power station.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.